<template>
<div>
<!-- 面包屑导航区域 -->
  <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>商品管理</el-breadcrumb-item>
    <el-breadcrumb-item>商品列表</el-breadcrumb-item>
  </el-breadcrumb>

  <!-- 卡片视图 界面列表 -->
  <el-card>
    <el-row :gutter="20" >
      <el-col :span='8'>
        <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
          <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
        </el-input>
      </el-col>
      <el-col :span='4'>
        <el-button type="primary" @click="goAddPage">添加商品</el-button>
      </el-col>
      </el-row>

      <el-table :data="goodslist" border stripe >
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格（元）" prop="goods_price" width="120px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="89px"></el-table-column>
        <el-table-column label="上架时间" prop="add_time" width="162px">
          <template slot-scope="scope">
              <!-- dataFormat 全局注册的过滤器 -->
            {{scope.row.add_time | dataFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" prop="goods_name" width="130px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页    -->
    <el-pagination
      @size-change="handleSizeChange" @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20 ]"
      :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper"
      :total="total" background>
    </el-pagination>
  </el-card>
</div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      //   商品列表
      goodslist: [],
      // 总条数
      total: 0
    }
  },
  // 页面加载前调用
  created() {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })

      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }
      //   this.$message.success('获取商品列表成功')
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    // 根据ID 删除商品
    async removeById(id) {
      const confirmResult = await this.$confirm('是否删除该商品', '提示', {
        confirmButtonText: '确定',
        cancelButtonRext: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消')
      }

      // 删除
      const { data: res } = await this.$http.delete(`goods/${id}`)

      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败')
      }
      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    // 添加商品
    goAddPage() {
      // router 多用于页面跳转
      this.$router.push('/goods/add')
    },
    // 总条数
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 页码值
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    }
  }
}
</script>

<style lang="less">
.cell {
  text-align: center;
}
</style>
